Device for winding radiocoils



Oct. 13 1925. 1,557,407

F. BITTNER DEVICE FOR WINDING RADIOCOILS Filed Jan. 1925 2 Sheets-$heetl .7 I V K/ 3 k x I granhlin 1511M 23 g INVENTOR ATTORNEY Oct. 13, 1925-1,551,407

F. BITTNER DEVICE FOR WINDING RADIOCOILS Filed-Jan. 19, 1925 2Sheets-Sheet 2 INVENTOR ATTORNEY Patented Oct. 13, 1925.

FRANKLIN BITTNER, OF NEW YORK, N. Y.

DEVICE 10R WINDING RADIOCOILS.

Application filed January 19, 1925.

To all whom it may concern Be it known that I, F RANKLIN llrrrnnn, acitizen of the United States of America, residing at 81 Irving Place,New York, county and State of New York, have invented new and usefulImprovements in Devices for Vinding Radiocoils, of which the followingis a specification.

This invention relates to devices for winding radio coils, andparticularly to devices for winding low loss radio coils.

One of the objects of the present invention is to produce an improvedskeleton or frame work upon which a low loss radio coil can be woundaccurately and speedil with the greatest ease and facility, therebyextend-- ing its use to the amateur and unskilled, as well as to theskilled.

Specifically, the present invention contemplates the provision of adevice which can be assembled in a plurality of ways to produce aplurality of cylindrical supporting surfaces having different diameters,whereby coils of various diameters can be readily wound by merelychanging the position and location of the relative parts.

Specifically, the invention further contemplates the provision of adevice for winding radio coils which can be readily disassembled withoutinterfering in any way with the coil being Wound, thereby facilitatingthe formation of a coil having uniform honeycomb formations.

These and other features, capabilities and advantages of the inventionwill appear from the subjoined detail description of one specificembodiment thereof, illustrated in the accompanying drawings, in which-F igure 1 is a plan view showing the units assembled for a certaindiameter.

Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a plan view of the centerpiece.

Fig. 4 is a side elevation of the centerpiece.

F ig. 5is an elevation of the centerpiece, showing the peripheralopenings formed therein in dotted lines.

Figs. 6, 7 and 8 illustrate a plan view, a side elevation and an endelevation respectively, of one of the coil supporting units.

Fig. 9 is a side elevation of one of the securing pins.

Fig. 10 is a side elevation showing one of the supporting units andsecuring pins secured to one another.

Serial No. 3,419.

Fig. 11 is a view illustrating diagrammatically several of the variuosdiameters of the supporting surfaces for the coils, and

Fig. 12 is a view illustrating diagrammatically still a. differentdiameter of Supporting surface for the coil being wound.

The present invention contemplates the provision of a winding deviceparticularly adapted for forming low loss radio coils. To do this, thereis provided a centerpiece 1 having an uneven plurality of orifices 2formed therein for the reception of pins 3.

There is also provided an uneven plurality of wire supporting units twhich may be secured to the centerpiece by the pins By the relativepositioning of the pins, units and centerpiece, one to another, aplurality of winding devices may be produced.

The centerpiece, in the present instance, has three cylindrical portions5, 6 and 7 of different diameters, the cylindrical portion 6 beingprovided with the orifices 2 and in the present instance having thegreatest diameter, and the cylindrical portion '7 having the leastdiameter. The cylindrical portion 7 is secured to one side of thecylindrical portion 6, and the intermediate sized cylindrical portion 5secured to the other side of the cylindrical portion 6.

The pins 3 of which there are provided an uneven number, are preferablycylindrical in form, as illustrated in Fig. 9. The pins 3, in number, ofcourse correspond to the number of orifices 2. hen assembled, the

orifices 2 receive the pins 3. The orifices 2,

in the present instance, are about one-half inch in depth.

I the present instance, the device is illustrated as comprising thirteenorifices 2 and thirteen pins 3, although, of course, it is understoodthat good results can be obtained with a greater or less number of pins,so long as they are uneven in number.

One type of winding device can be ob tained by merely securing pins 3 tothe centerpiece 1 without the use of the supporting units 4. In suchinstance, the periphery of the cylindrical portion 6 will serve as thesupporting surface for the coil to be wound. Of course it is understoodthat the reason for providing an uneven number of pins is in order toinsure the winding of the conductors on the pins so that the wire, whenreturning to its initial pin, will be directed in the opposite directionaround said initial pin so that adjacent layers of the wire will units4, as illustrated in Figs. 6, 7. and 8, each consist of a loweranchoring member 9 and a pin member 10. The pin member 10 is preferablycylindrical and has substantially the same diameter as the pin 3. In thepres- I cut instance, it is shown as having a shortor length than thepin 3. The anchoring member is preferably of the same width as the widthof the centerpiece 1. It has two sets of inclined faces, one setcomprising the faces 11 and 12, and the other set comprising the faces13 and 14. The inclination of these faces depends upon the number ofpins and supporting units that are used. In the present instance, whereonly thirteen pins and thirteen supporting units are used,

the faces of each set are inclined to one another at about twenty-sevendegrees- The end face 15 of each anchoring member, in the presentinstance, is shown convex, although this is not necessary. It is onlynecessary that the length from end to end of the faces ap roximate aboutone-thirteenth of the perip ery of the cylindrical member 6 so thatwhenthe anchoringmembers are secured to said c lindrical portion 6, inthe manner indicate in Fig. 12, the face 11 of each anchoring memberwill engage the face 12 of an adjacent anchoring member and therebyaline the anchorin members with one another, around the cy indricalportion 6. Of course, when there are a greater or less number ofanchoring members used, the length of the end face 15 will becorrespondingly changed. As shown in Fig. 8 a cylindrical opening 16 isformed in the anchoring member extending from the end face 15 to theconcave face 17. Through these orifices 16 and the orifices 2, the pins3 extend and thereby help to aline and anchor the anchoring members tothe centerpiece 1.

When the supporting units 4 are used as just described, with the convexfaces 15 engaging the eriphery of the cylindrical portion 6, as ilustrated in Fig. 12, the coils, of course, will be wound on the pins 10and consequently the radius of the outer suprting surface of the coilswill be, as inicated in Fig. 12 by the arrow 26.

Adjacent to the concave face 17 a depending portion 18 is formed on eachanchoring member, the side faces of which are continuations of the faces13 and 14 of the anchoring member. The end; face 1? q pendingmember 18isalsd concave. if presentinstance, the arcuate length of fill concaveface 19 is substantially one;thirteenth of the peripheral length of thelindrical, portion-7, and the arcuate of the concave face 17 of eachancho nlilember ;.}i1s sllitistanthiallfy hone-ihirteend t e perip eraengt o t ecy in rice tion 6. Furthermore, the faces are also inclined toone another at awfi twenty-seven degrees. Gonsequenlrwhfiy the anchoringmembers are mean ondillet' centerpiece 1 with their concave faces aengagement with the cylindrical 6 and their concave faces 19 inengagemelfi with the cylindrical portion 7, he ing members, as shown inFigs. 1 and 2, aline one another and be -in intimate e-t ment with oneanother. In this also, the pins 3 will extend thmughthea fices 16 intothe orificesfl of "the cylindrical portion 6 and there help properly'toand anchor the anchoring member. y the anchoring members are mounted,as:

a Lair-n mam-ii lustrated in Figs. 1 and 2 just radius of the outereripheryd'efined convex faces 15 will be, as indicated 11 b the arrow20. wa n the anc mem rs are so mounted, the cond 1,, can also be woundaround the pins 10M the supporting units, in which case, outersupporting periphery of Such ductors Wlll have the radius indieated fl.the arrow 21 in Fig. 11.

Still further combinations em be? trived. As an instance as illustntedthe rightside of the schematic view, I 11, the concave faces 19 of thesac 1' members may engage the cfilindrfical port, 5 of the centerpiece 1wit me 22 of the de nding i the face 23 o the eylindrieai' portioiiy fbeing alined thereb when the piasi fi flintv-f tend through the o"'ifl'ofthe "I 1.1 members into the orifieesQof-the ey y portion 6. Inthis positionagaingtwo fl mg surfaces are provided, one the pins 3 onthe convexfaees 15, of which'is indicated the arrow w the other windings ace on the pifisf the outer riphery of'the windinghaving the i adiusindicated: by the minum, the centerpi and anchoriq bers being cast andthe rods cu'tflfrom dricai stock, although obviously, othet terials canalso be used with With these devices, it is than a that low has radiocoils with various ters can be wound by merely re-a W the units to suitthe combinations When the coils are formed on the ins "the coils can beremoved without This is readily accomplished by securing the loops of acoil together with silk thread, shellac or the like, as each pin 3 isdrawn out. In other words, as each pin 3 is removed the adjacentanchoring member is free to drop out. Thereupon, and before removing thesucceeding pin 3, the liberated portion of the coil is secured inposition by a silk thread, shellac or the like, whereupon the nextsucceeding or another pin may be removed, liberating another anchoringmember and so on.

Similarly, when the coils are formed on the pins 10, the coils may beremoved without distortion. In this latter case, similarly a pin 3 willfirst be removed, and thereupon the thereby connected anchoring member 9withdrawn to liberate a portion of the coil, which may then be securedin place by a silk thread, shellac or the like. Thereafter a succeedingor another pin 3 may be removed followed by the anchoring member 9 whichhas been secured in place by such pin 3.

The removable feature aforesaid constitutes one of the main features ofthe present invention.

\Vith these devices, low loss radio coils of various shapes may also beroduced without regard to the diameter 0 the same. As an instance,instead of winding the conductors of a. coil zig-zag from the left sideof one pin to the right side of the succeeding pin and from such rightside of the succeeding pin to the left side of the next succeeding pin,the conductors of a coil may pass around the left side of two adjacentpins and then pass to the ri ht side of the next two succeeding pins anso on.

- \Vhen the pins 3 do not fit snugly in the orifices 2 of thecenterpiece 1, (1 results have been obtained with this device by using arubber band 27, as illustrated in Fig. 2, encircling the pins 10 wherebytheanchoring members 9 and pins 3 are securely located in place.

It is obvious that various changes and modifications may be made to thedetails of construct-ion without departing from: the general spirit ofthe invention, as set forth in the appended claims.

I claim:

1. A device of the character described havmg a plurality of pins, acenterpiece provided with a plurality of orifices for removahlyreceiving said P1118 and to form a forming core for a coil having aninner periphery corresponding to the outer periphery of the centerpiece,and a phirality of anchoring members removehly secured in position onsaid centerpiece by said pins to form a forming core for a coil havingan inner periphery corresponding to the outer periphery formed by saidanchoring members 2. A device of the character described having aplurality of pins, a centerpiece provided in its periphery with a.plurality of orifices corresponding to the number of pins for removablyrcmiving said pins to form a forming core for a coil having an innerperiphery corresponding to the outer periphery of the centerpiece, and aplurality of anchoring members rcmovably secured in position on theperiphery of said centerpiece by said pins to form a forming core for acoil having an inner periphery corresponding to the outer peripheryformed by said anchoring members.

3. A device of the character described having a plurality of pins, acenterpiece in its periphery provided with a plurality of orificescorresponding to the number of pins for rcmovably receiving said pins toform a forming core for a coil having an inner periphery correspondingto the outer periphery of the centerpiece, and a plurality of anchoringmembers removably secured in position on the periphery of saidcenterpiece by said pins to form a plurality of forming cores for coilshaving inner peripheries corresponding to the outer peripheries formedby said anchoring inembeis.

4. A device of the character described having a plurality of pins, acenterpiece having a cylindrical surface and provided with a pluralityof orifices in its periphery corresponding to the number of pins forremovably receiving said pins to form a forming core for a coil havingan inner periphery corresponding to the outer periphery of thecenterpiece, and a plurality of anchoring members removably secured inposition on the periphery of said centerpiece by said pins to form aplurality of forming cores for coils having inner peripheriescorresponding to the outer eripheries formed by said anchoring mem ers.

5. A device of the character described having a plurality of pins, acenterpiece having a plurality of cylindrical portions adjacent to oneanother, there being a plurality of orifices in one of said cylindricalportions corresponding to the number of pins for removably receivingsaid pins to form a forming core for a coil having an inner peripherycorresponding to the outer periphery of the cylindrical portion providedwith the orifices, and a plurality of anchoring members removablysecured in position on the periphcry of said centerpiece by said pins toform a plurality of forming cores for coils having inner peripheriescorresponding to the outer peripheries formed by said anchoring members,said anchoring members having depending portions engaging one of saidcylindrical portions to define the location of the same.

'6. A device of the character described, having a centerpiece composedof three cylindrical portions concentric with one another and ofdifierent diameters, the intermediate portion having the greatestdiameter and provided with a plurality of orifices, anchoring membershaving de ding lugs ltto engage either af aid other y drical portionsaccording to the position to be assumed. therebeing-orifices formed insaidanchoring me hers, and spin extend through the o es of saidanchoring mem rs into said loicenterpiece toanchor the same in place.

7. A device of the character described having a plurality of ins, acenterpiece having a plurality of ori ces for removably receiving saidpins to form a forming core for 16 a coil having one diameter, aplnralit of anchoring members provided with orifices to receive saidpins and to be removably secured in position on the periphery of saidcenterpiece to form a forming core for a coil 20* having an inner perihery correspondin to. the outer periphery efined by said one oringmembers,. and fixed pins on said anchoring members extending at rightangles to the orifices in said anchoring members to form still anotherforming core for a-coil having an inner eripher corresponding to theouter perip ery de ned by the fixe pins.

8. A device of the character described having a plurality of pins, acenterpiece having a plurality of orifices for removably receiving saidpins to form a formi core for a coil having one diameter, a plur ity ofanchoring members provided with orifices to receive said pins and to beremovably secured I in. position onethe periphery of said centeriece toform a iorming core for a coil havmg an inner peripherylcorresponding tothe outer periphery defined by said anchoring members, and fixed pinsonsaidranchoring members exten orifices in said an oring members to formstill another forming core for a coil having an inner peripherycorrespondin .to the outer periphery defined by the fix anchoring memberhaving a plurality of-inclined 1 faces so that when the anchoringmembers are mounted on the centerpiece their ,opposingfaees will engageone another and thus. aline the same in place.

9.. A deviceoi the character described having a plurality of anchoringmembers, a cents iece- 'a cylindrical portion, there ing orifices formedin sai cylindrical eportroni'and extending to. the eriphthereof, eachanchoring member avmg two'vsets'of inclined faces, there being anorifice extending through each anchoring member, and securing pinsextending through the orifices-of said anchoringmemso here into theorifices of said cylindrical portion to secure the anchoring members inplace with either of their sets 0 inclined faces in engagement with oneanother.

10. A device of the character described 66-. having a plurality ofsecuring members, a

at right angles to the pins, each cry centerpiece hav' a plurality oforifices for? removably receiving said securing to form a forming corefor acoilhwin inner periphery corresponding tortheout'am f periphery ofsaid a phi anchor-i members vided w th o each an oring malar -havingasetvofi ii it clined 'faces of "one of and another set ofinolined'iaees of another! incident ofinclinatiomthemcurin extendingthrough theorifices 0 choring members either removably to C theanchoring members in lacewith the 1-3? faces of one incident of'incation in eni L gagement with one another to form another} formincoreehaving an-inner perip respon ing to the outer periphery of choringmembers when sopos'i ned, or re W movab y to secure the place with thefaces of thelotherfincidentt'lfl inclination in engagementwith oneanothera a to form still another to core having? an inner peripherycorrespo to the outer i j peripheryof the anchoring mem when positioned.4 w 11. A device of the character having a plurality of securing mem FT- centerpiece havinga plurality of orifices j removably receiving; saidsecuring to form a tanning core for a coil having an inner peripherycorresponding'to the entail periphery of. said centerpiece a pluraliltg'efi anchorinfimembers gpvided with or" mg, each ane ringmem having aset-of clined faces ofone incident'of and another set of inclined facesof an f at incident of inclination, extending through the orifices o"said lm choring members either removably 5 cure the anchoring memrsinlace the faces of oneimcident'ofi incf f; engagement with .one anotherto form I? oth'erztorming core an inner perifliif corresponding tc' saw-0am pert of the anchorin e p tioned, or remove lytosecure the anchoringmembers in place the faees of incident of mclinatibn enga merit nOmillol' hfll' to a'hot erifo core avmg an inner ery conesp 1 ing to theouter perip eryof the anchoring. members when sopositionad, each anehomemberwhaving a depemdingmemher is A ing the eontimiationot of facestoeng g the ieoe-and toaidf alining the anchormg. vmembers when 9anchoring members are ioned latteri mtedf inclined with i a 12. A deviceof the chara'cter d having aplur-alityof securing mem centerpiecehavinga plurality of removably receiving said m f m to form a forming core fora coifiiavingx inner periphery corresponding to the outer 1|.

as i

periphery of said centerpiece, a plurality of anchoring members providedWlth orifices, each anchoring member having a set of inclined faces, thesecuring members extending through the orifices of said anchoringmembers removably to secure the anchoring members in place with saidinclined faces in engagement with one another to form another formingcore for a coil having an inner periphery corresponding to the outerperiphery of said anchoring members when so positioned.

13. A device of the character described having a plurality of securingmembers, a centerpiece having a plurality of orifices for removablyreceiving said securing members to form a forming core for a coil havingan inner periphery corresponding to the outer periphery of saidcenterpiece, a plurality of anchoring members provided with orifices,each anchoring member having a set of inclined faces the securingmembers extend ing through the orifices of said anchoring membersremovably to secure the anchoring members in place with said inclinedfaces in engagement with one another to form another forming core for acoil having an inner periphery corresponding to the outer periphery ofsaid anchoring members When so positioned, each anchoring member havinga depending member forming a continuation of said inclined faces toengage the centerpiece and to aid in alining the anchoring members.

F RANKLIN BITTNER.

